Distortion reduction in a wireless communication device

Details Distortion reduction in a wireless communication device Distortion reduction in a wireless communication device

2006-11-21

2006-11-21

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S278100, C455S283000, C455S295000, C375S144000, C375S148000

Reexamination Certificate

active

07139543

ABSTRACT:
The present invention provides a technique for cancellation of jammer signals in a radio frequency receiver. A radio frequency signal contains both a desirable signal and an undesirable jammer signal. The combined signal is processed with a filter (104) to extract only the undesirable jammer signal. The jammer signal is then added (104) back to the combined signal to effectively cancel the jammer signal. The system may be implemented using a feedforward approach or a feedback approach. The resultant clean signal is processed in a conventional manner.

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Demirkiran, I., et al. (1997) A knowledge-based interference rejection scheme for direct sequence spread-spectrum systems. IEEE: 120-124.

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